Bronchitis is inflammation in the bronchial tubes that causes excess mucus, which is why people with bronchitis often cough so much. So, the answer would be B.
The prefix is different
One is high and the other is low
If there is no response and not breathing or not breathing normally, position the infant on his or her back and begin CPR. Give 30 gentle chest compressions at the rate of 100-120/minute. Use two or three fingers in the center of the chest just below the nipples.
source :CPR Instructions For Infants and Small Children
depts.washington.edu/learncpr/infantcpr.html